condition	mean	min	max
4 h after light	13.8579	12.8339	14.8819
8 h after light	9.708300000000001	9.247	10.1696
12 h after light	12.0745	11.7284	12.4206
4 h after dark	17.556966666666668	16.3245	18.7481
8 h after dark	19.614933333333333	18.3497	21.2152
12 h after dark	17.048166666666667	15.4883	19.5553